getTimeAggregatedData - Add GPS coordinates when using groupBy=id

[tbec]

I realize that this is obscure and maybe the answer is an implementation somewhere else, but Samy needs the location of the sensors to plot them on getTimeAggregatedData. We talked about how maybe he could do another query to get the sensor locations and combine the results with the results of this query, but we would like to keep a lot of the computation off of the front-end.